21410442313 has 4 divisors (see below), whose sum is σ = 23057399428. Its totient is φ = 19763485200.

The previous prime is 21410442293. The next prime is 21410442329. The reversal of 21410442313 is 31324401412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8250452224 + 13159990089 = 90832^2 + 114717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21410442313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21410445313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823478538 + ... + 823478563.

It is an arithmetic number, because the mean of its divisors is an integer number (5764349857).

Almost surely, 2^21410442313 is an apocalyptic number.

It is an amenable number.

21410442313 is a deficient number, since it is larger than the sum of its proper divisors (1646957115).

21410442313 is a wasteful number, since it uses less digits than its factorization.

21410442313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646957114.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21410442313 its reverse (31324401412), we get a palindrome (52734843725).

The spelling of 21410442313 in words is "twenty-one billion, four hundred ten million, four hundred forty-two thousand, three hundred thirteen".